package com.changgou.goods.service.impl;

import com.alibaba.fastjson.JSON;
import com.changgou.goods.dao.*;
import com.changgou.goods.pojo.*;
import com.changgou.goods.service.SpuService;
import com.changgou.util.IdWorker;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import tk.mybatis.mapper.entity.Example;

import javax.management.relation.RoleUnresolved;
import java.util.Date;
import java.util.List;
import java.util.Map;

@Service
public class SpuServiceImpl implements SpuService {

    @Autowired
    private SpuMapper spuMapper;


    //这个在启动类中使用bean注解把对象放到spring容器中了,这里可以直接调用
    @Autowired
    private IdWorker idWorker;

    @Autowired
    //引入categoryBrandMapper这个mapper
    private CategoryBrandMapper categoryBrandMapper;

    @Autowired
    private CategoryMapper categoryMapper;

    @Autowired
    private BrandMapper brandMapper;

    @Autowired
    private SkuMapper skuMapper;

    /**
     * 查询全部列表
     * @return
     */
    @Override
    public List<Spu> findAll() {
        return spuMapper.selectAll();
    }

    /**
     * 根据ID查询
     * @param id
     * @return
     */
    @Override
    public Spu findById(String id){
        return  spuMapper.selectByPrimaryKey(id);
    }


    /**
     * 增加
     * @param goods
     */
    @Transactional
    @Override
    public void add(Goods goods){
        //goods中含有spu,添加spu
        Spu spu = goods.getSpu();
        //设置分布式id
        long l = idWorker.nextId();
        spu.setId(String.valueOf(l));
        //设置删状态
        spu.setIsDelete("0");
        //审核状态
        spu.setStatus("0");
        //审核状态
        spu.setIsMarketable("0");
        spuMapper.insertSelective(spu);

        //添加sku集合
        this.saveSkuList(goods);
    }

    //添加sku数据,因为添加spu的时候sku也会存在,相当于sku是spu里的一个字段,这里把它封装成了一个goods对象
    private void saveSkuList(Goods goods) {
        //获取spu
        Spu spu = goods.getSpu();
        //查询分类对象,后面添加sku的数据的时候需要用到
        Category category = categoryMapper.selectByPrimaryKey(spu.getCategory3Id());
        //查询品牌对象,后面添sku中商家名称是需要用到这个查询出来的对象名称
        Brand brand = brandMapper.selectByPrimaryKey(spu.getBrandId());

        //设置品牌和分类白哦之间的关系,我们存goods时需要这种关系也设置好,以便以后使用这个数据
        //创建关联表的对象,手动创建这个pojo类
        CategoryBrand categoryBrand=new CategoryBrand();
        //添加这个brand和category到categoryBrand中
        categoryBrand.setBrandId(spu.getBrandId());
        categoryBrand.setCategoryId(spu.getCategory3Id());
        //通过查询判断品牌和分类是否具有关系
        int count = categoryBrandMapper.selectCount(categoryBrand);

        if (count==0){
            //此时品牌和分类还没有关系,所以需要添加这种关系,这样在那个中间表中就有这个新添加的数据了
            categoryBrandMapper.insert(categoryBrand);
        }
        //获取sku集合
        List<Sku> skuList = goods.getSkuList();
        //遍历集合循环添加sku的数据
        for (Sku sku : skuList) {
            //设置sku的id
            sku.setId(String.valueOf(idWorker.nextId()));
            //设置规格数量,先判断是否为空
            if (StringUtils.isEmpty(sku.getSpec())){
                //如果是空
                sku.setSpec("{}");
            }
            //设置sku名称(spu名称+规格)
            String name = spu.getName();
            //将规格json转换为map,将map中的value进行名称的拼接
            Map<String,String> specMap = JSON.parseObject(sku.getSpec(), Map.class);
            if (specMap != null && specMap.size()>0){
                for (String value : specMap.values()) {
                    name+=" "+value;
                }
            }
            sku.setName(name);

            //设置spuid,这里可以自动生成一个id吗,还是说一定要生成这个
            sku.setSpuId(spu.getId());
            //设置创建和修改时间
            sku.setCreateTime(new Date());
            sku.setUpdateTime(new Date());
            //商品分类id
            sku.setCategoryId(category.getId());
            //设置商品分类名称
            sku.setCategoryName(category.getName());
            //设置商品名称
            sku.setBrandName(brand.getName());
            //将设置完成sku添加到数据库
            skuMapper.insertSelective(sku);

        }

    }


    /**
     * 修改
     * @param goods
     */
    @Override
    public void update(Goods goods){
        //取出spu部分
        Spu spu = goods.getSpu();
        spuMapper.updateByPrimaryKey(spu);
        //删除原sku列表
        Example example=new Example(Sku.class);
        Example.Criteria criteria = example.createCriteria();
        criteria.andEqualTo("spuId",spu.getId());
        skuMapper.deleteByExample(example);

        //保存sku列表,调用saveSKuList的方法
        saveSkuList(goods);


    }

    /**
     * 逻辑删除
     * @param id
     */
    @Override
    public void delete(String id){
        Spu spu = spuMapper.selectByPrimaryKey(id);
        //检查是否是下架商品,需要先下架再删除
        if ("1".equals(spu.getIsMarketable())) {
            throw new RuntimeException("该商品不是下架商品");
        }
        spu.setIsDelete("1");//删除
        spu.setStatus("0");//为审核
        spuMapper.updateByPrimaryKeySelective(spu);


    }


    /**
     * 条件查询
     * @param searchMap
     * @return
     */
    @Override
    public List<Spu> findList(Map<String, Object> searchMap){
        Example example = createExample(searchMap);
        return spuMapper.selectByExample(example);
    }

    /**
     * 分页查询
     * @param page
     * @param size
     * @return
     */
    @Override
    public Page<Spu> findPage(int page, int size){
        PageHelper.startPage(page,size);
        return (Page<Spu>)spuMapper.selectAll();
    }

    /**
     * 条件+分页查询
     * @param searchMap 查询条件
     * @param page 页码
     * @param size 页大小
     * @return 分页结果
     */
    @Override
    public Page<Spu> findPage(Map<String,Object> searchMap, int page, int size){
        PageHelper.startPage(page,size);
        Example example = createExample(searchMap);
        return (Page<Spu>)spuMapper.selectByExample(example);
    }

    /**
     * 根据goods的id查询
     * @param id
     * @return
     */
    @Override
    public Goods findGoodsById(String id) {
        Goods goods=new Goods();
        //查询spu,封装到goods中
        Spu spu = spuMapper.selectByPrimaryKey(id);
        goods.setSpu(spu);

        //查询sku,封装到goods中
        Example example=new Example(Sku.class);
        Example.Criteria criteria = example.createCriteria();
        //根据spu进行sku列表的查询,因为这个spuId是spu中id的外键
        criteria.andEqualTo("spuId",id);
        List<Sku> skus = skuMapper.selectByExample(example);

        goods.setSkuList(skus);
        return goods;

    }

    /**
     * 商品审核
     * @param id
     */

    @Override
    public void audit(String id) {
        //先根据id查询spu
        Spu spu = spuMapper.selectByPrimaryKey(id);

        //看spu是否存在
        if (spu==null){
            throw new RuntimeException("当前商品不存在");
        }

        //判断当前商品是否被删除
        if ("1".equals(spu.getIsDelete())){
            //当前状态是已删除
            throw  new RuntimeException("当前商品是已删除的状态");

        }

        spu.setStatus("1");
        spu.setIsMarketable("1");
        //执行修改的操作
        spuMapper.updateByPrimaryKeySelective(spu);

    }

    /**
     * 下架
     * @param id
     */

    @Override
    public void pull(String id) {
        Spu spu = spuMapper.selectByPrimaryKey(id);
        if (spu==null){
            throw new RuntimeException("当前商品不存在");
        }
        if ("1".equals(spu.getIsDelete())){
            throw new RuntimeException("当前商品已删除");
        }
        spu.setIsMarketable("0");
        spuMapper.updateByPrimaryKeySelective(spu);

    }

    /**
     * 上架
     * @param id
     */

    @Override
    public void put(String id) {
        Spu spu = spuMapper.selectByPrimaryKey(id);
        if (spu==null){
            throw new RuntimeException("当前商品不存在");
        }
        if ("0".equals(spu.getStatus())){
            throw new RuntimeException("当前商品未审核");
        }
        spu.setIsMarketable("1");
        spuMapper.updateByPrimaryKeySelective(spu);


    }

    /**
     * 还原被逻辑删除的商品
     * @param id
     */

    @Override
    public void restore(String id) {
        Spu spu = spuMapper.selectByPrimaryKey(id);
        if (spu==null){
            throw new RuntimeException("当前商品不存在");
        }
        //检查商品是否被删除
        if (!spu.getIsDelete().equals("1")){
            throw new RuntimeException("此商品未删除");
        }
        spu.setIsDelete("0");//未删除
        spu.setIsMarketable("0");//未审核
        spuMapper.updateByPrimaryKeySelective(spu);
    }

    /**
     * 物理删除
     * @param id
     */
    @Override
    public void realdelete(String id) {
        Spu spu = spuMapper.selectByPrimaryKey(id);
        //判断该商品是否已经被逻辑删除
        if ("0".equals(spu.getIsDelete())){
            throw  new RuntimeException("该商品未删除");
        }
        spuMapper.deleteByPrimaryKey(id);

    }

    /**
     * 构建查询对象
     * @param searchMap
     * @return
     */
    private Example createExample(Map<String, Object> searchMap){
        Example example=new Example(Spu.class);
        Example.Criteria criteria = example.createCriteria();
        if(searchMap!=null){
            // 主键
            if(searchMap.get("id")!=null && !"".equals(searchMap.get("id"))){
                criteria.andEqualTo("id",searchMap.get("id"));
           	}
            // 货号
            if(searchMap.get("sn")!=null && !"".equals(searchMap.get("sn"))){
                criteria.andEqualTo("sn",searchMap.get("sn"));
           	}
            // SPU名
            if(searchMap.get("name")!=null && !"".equals(searchMap.get("name"))){
                criteria.andLike("name","%"+searchMap.get("name")+"%");
           	}
            // 副标题
            if(searchMap.get("caption")!=null && !"".equals(searchMap.get("caption"))){
                criteria.andLike("caption","%"+searchMap.get("caption")+"%");
           	}
            // 图片
            if(searchMap.get("image")!=null && !"".equals(searchMap.get("image"))){
                criteria.andLike("image","%"+searchMap.get("image")+"%");
           	}
            // 图片列表
            if(searchMap.get("images")!=null && !"".equals(searchMap.get("images"))){
                criteria.andLike("images","%"+searchMap.get("images")+"%");
           	}
            // 售后服务
            if(searchMap.get("saleService")!=null && !"".equals(searchMap.get("saleService"))){
                criteria.andLike("saleService","%"+searchMap.get("saleService")+"%");
           	}
            // 介绍
            if(searchMap.get("introduction")!=null && !"".equals(searchMap.get("introduction"))){
                criteria.andLike("introduction","%"+searchMap.get("introduction")+"%");
           	}
            // 规格列表
            if(searchMap.get("specItems")!=null && !"".equals(searchMap.get("specItems"))){
                criteria.andLike("specItems","%"+searchMap.get("specItems")+"%");
           	}
            // 参数列表
            if(searchMap.get("paraItems")!=null && !"".equals(searchMap.get("paraItems"))){
                criteria.andLike("paraItems","%"+searchMap.get("paraItems")+"%");
           	}
            // 是否上架
            if(searchMap.get("isMarketable")!=null && !"".equals(searchMap.get("isMarketable"))){
                criteria.andEqualTo("isMarketable",searchMap.get("isMarketable"));
           	}
            // 是否启用规格
            if(searchMap.get("isEnableSpec")!=null && !"".equals(searchMap.get("isEnableSpec"))){
                criteria.andEqualTo("isEnableSpec", searchMap.get("isEnableSpec"));
           	}
            // 是否删除
            if(searchMap.get("isDelete")!=null && !"".equals(searchMap.get("isDelete"))){
                criteria.andEqualTo("isDelete",searchMap.get("isDelete"));
           	}
            // 审核状态
            if(searchMap.get("status")!=null && !"".equals(searchMap.get("status"))){
                criteria.andEqualTo("status",searchMap.get("status"));
           	}

            // 品牌ID
            if(searchMap.get("brandId")!=null ){
                criteria.andEqualTo("brandId",searchMap.get("brandId"));
            }
            // 一级分类
            if(searchMap.get("category1Id")!=null ){
                criteria.andEqualTo("category1Id",searchMap.get("category1Id"));
            }
            // 二级分类
            if(searchMap.get("category2Id")!=null ){
                criteria.andEqualTo("category2Id",searchMap.get("category2Id"));
            }
            // 三级分类
            if(searchMap.get("category3Id")!=null ){
                criteria.andEqualTo("category3Id",searchMap.get("category3Id"));
            }
            // 模板ID
            if(searchMap.get("templateId")!=null ){
                criteria.andEqualTo("templateId",searchMap.get("templateId"));
            }
            // 运费模板id
            if(searchMap.get("freightId")!=null ){
                criteria.andEqualTo("freightId",searchMap.get("freightId"));
            }
            // 销量
            if(searchMap.get("saleNum")!=null ){
                criteria.andEqualTo("saleNum",searchMap.get("saleNum"));
            }
            // 评论数
            if(searchMap.get("commentNum")!=null ){
                criteria.andEqualTo("commentNum",searchMap.get("commentNum"));
            }

        }
        return example;
    }

}
